real number
The concept of 'real numbers' is fundamental in mathematics, representing all possible magnitudes along a continuous line, including both rational and irrational numbers.
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Definition
B2Mathematics
(technical, academic)Any value that can be represented on a continuous number line, including both rational numbers (like fractions and integers) and irrational numbers (like non-repeating, non-terminating decimals).
Example
- The numbers 3, -1.5, and Ο are all real numbers.
- Real numbers can be visualized as points on an infinitely long line.
C1Computing
(technical)A number that can be represented as a floating-point value in computer systems.
Example
- In many programming languages, real numbers are handled using floating-point arithmetic.
- The variable was defined to store real numbers to accommodate both integer and fractional values.
Similar
Terms that have similar or relatively close meanings to "real number":
rational numbersfloating-point numberimaginary numbernatural numberround numberdual numberfractional number